An electric radiator running idle in a poorly insulated room, an oversized hot water tank for two occupants, an overloaded electrical panel that prevents any additional outlets: these situations are common in the majority of French homes. Choosing the right equipment for your home is not just about comparing product sheets. It is primarily a matter of technical constraints, regulations, and the suitability of the equipment for the actual use of the household.
Electrical panel and NF C 15-100 standard: the often-overlooked starting point
Before considering heating or home automation, we start with the electrical panel. It determines the capacity for any new equipment. An overloaded panel, with no free slots, blocks the installation of a programmable thermostat, a charging station, or even a simple circuit of additional outlets.
The NF C 15-100 standard, whose August 2024 edition serves as a reference for construction sites since September 2025, requires a reserve of 20% of free DIN modules in the panel. This requirement applies to new constructions and major renovations, but it provides a good guideline for any homeowner. If your panel has no available slots, planning for its replacement or extension before adding equipment avoids unpleasant surprises.
To evaluate the available options, you can consult the equipment on Habitat Solutions which brings together various ranges suitable for common residential configurations.
Heating regulation: what the decree of June 7, 2023 changes concretely
We often talk about thermal comfort, but rarely about the regulatory obligation that accompanies it. A decree from June 7, 2023 mandates automatic temperature regulation room by room. The deadline is set for January 1, 2027, for new constructions and extended to January 1, 2030, for existing buildings, according to a complementary decree from December 26, 2025.
In practice, this means that a simple radiator with a dial will no longer suffice in a renovated home. At a minimum, a programmable thermostatic valve will be required on each heat emitter, or a centralized thermostat capable of controlling zone by zone.
The good news: you don’t need a high-end home automation system. A wired or wireless programmable thermostat, combined with thermostatic heads on the radiators, meets the requirement. Feedback varies on actual savings, but the regulatory framework no longer leaves room for choice on the principle.
Concrete criteria for choosing a thermostat
- Compatibility with the existing heating system (gas boiler, heat pump, electric radiators): a universal thermostat does not exist, check the communication protocols before purchase
- Weekly programming with adjustable time slots, allowing you to lower the setpoint at night and during the day when the home is empty
- The ability to control multiple zones independently, a necessary condition to comply with the 2023 decree
- Power supply (wired or battery): a wired model avoids battery replacements but requires cable installation
Insulation and thermal protection: prioritize high-loss areas
Installing efficient heating in a poorly insulated home is like heating the outdoors. You gain more by first addressing the main sources of heat loss before replacing the boiler.
Windows and door bottoms represent easy thermal leaks to address without engaging in major work. A perimeter insulation seal on the openings, a brush or soft lip door sweep, an insulating film on single glazing: these inexpensive devices significantly reduce drafts.
For walls and attics, the investment is heavier, but the return on energy bills is measurable. Insulating lost attics remains the most cost-effective measure in most single-family homes. In condominiums, external insulation depends on the vote in the general assembly, complicating individual decisions.
Additional equipment: ventilation
It is often forgotten, but a well-maintained VMC determines air quality and the durability of insulation. Enhanced insulation without adequate ventilation generates condensation, mold, and degrades the structure. Checking the condition of the extraction vents and the VMC airflow is part of the equipment choice just like heating.
Hot water and energy: adapting production to the number of occupants
A 300-liter tank for a couple without children unnecessarily maintains a large volume of water at temperature. Conversely, an instantaneous water heater may lack flow if multiple draw-off points are used simultaneously.
The sizing depends on the number of occupants, the number of bathrooms, and consumption habits. For a household of two people, a moderately sized tank is sufficient. For four people with the possibility of two simultaneous showers, you move to a larger volume or a thermodynamic system that recovers calories from the ambient air.
- Check the energy class of the tank: recent models show significantly lower static losses than older storage heaters
- Consider a thermodynamic water heater if the home has an unheated room (garage, laundry room) for installation
- Schedule heating hours during off-peak times to reduce the bill; a simple timer is sufficient for standard electric models
The choice of hot water production equipment weighs as heavily as heating on the annual energy consumption of a home. It is a matter that should not be treated by default.
Each home has its own constraints: surface area, year of construction, type of existing heating, number of occupants. Rather than seeking a universal solution, you save time and money by starting from the actual state of the home, including the electrical panel, to identify the equipment that meets a measured need.
